Catalog
Borosilicate Tubular Gauge Glass — Redline & Transparent
Manufactured in 3.3 Borosilicate Glass, these level gauge glass tubes are used in applications where a good chemical resistance and low thermal expansion coefficient are required.
Redline vs Transparent Tube
Redline Sight Glass is a specialized feature designed to enhance the visibility of fluid levels within a vessel. It uses distinct red and white lines along its length to provide refracted magnification and stark contrast against the color of the fluid or background making it easier to identify fluid levels at a glance.
This redline feature offers a practical and efficient method of enhancing usability in industrial fluid management. For more details, click here .
Transparent tube is essential for direct, unobstructed observation of fluid levels within a vessel. In addition to level maintenenace, this glass offers clear visibility enabling operators to monitor fluid characteristics such as color, clarity and the presence of any layers or sediments.
This transparency is crucial for accurate level measurement and quality control in processes where the fluid's characteristics directly impact decision making and safety protocols. For more details, click here .
Redline Sight Glass and Transparent Tube: Technical Information
Redline Sight Glass and Transparent Tube: Technical Information
| Glass Type | 3.3 Borosilicate |
|---|---|
| Wall Thickness | Standard Wall, High Pressure, Heavy Wall |
| Minimum Length | 1" |
| Maximum Length | 145" |
| Maximum Short-term Temperature | 560°C (1040°F) |
| Thermal Shock Resistance | 140 K |
| Maximum Working Pressure | Refer to table below |
| Acid Resistance | Class S1 (ISO 1776) |
| Alkaline Resistance | Class A2 (ISO 695) |
| B2O3 | Minimum 13% content |
| Na2O + K2O | Minimum 4.5% content |
Special dimensions available upon request
Special dimensions available upon request
| Dimension | Minimum | Maximum |
|---|---|---|
| Outside Diameter — 3/16" | 1-1/2" | |
| Wall Thickness — 3/64" | 1/2" | |
| Length | 1" | 145" |
Below are the most common O.D. and Length variants along with their pressure resistance under low-temperature and high-temperature (steam service) operating conditions. For any other tubular variant pressure ratings, please consult with a Zight Representative .